diff options
Diffstat (limited to 'pint/util.py')
| -rw-r--r-- | pint/util.py | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/pint/util.py b/pint/util.py index e250b0e..09aed5f 100644 --- a/pint/util.py +++ b/pint/util.py @@ -28,6 +28,7 @@ from typing import ( Callable, TypeVar, Any, + Optional, ) from collections.abc import Hashable, Generator @@ -63,8 +64,8 @@ def _noop(x: T) -> T: def matrix_to_string( matrix: ItMatrix, - row_headers: Iterable[str] | None = None, - col_headers: Iterable[str] | None = None, + row_headers: Optional[Iterable[str]] = None, + col_headers: Optional[Iterable[str]] = None, fmtfun: Callable[ [ Scalar, @@ -231,7 +232,7 @@ def column_echelon_form( return _transpose(ech_matrix), _transpose(id_matrix), swapped -def pi_theorem(quantities: dict[str, Any], registry: UnitRegistry | None = None): +def pi_theorem(quantities: dict[str, Any], registry: Optional[UnitRegistry] = None): """Builds dimensionless quantities using the Buckingham π theorem Parameters @@ -347,7 +348,7 @@ def solve_dependencies( def find_shortest_path( - graph: dict[TH, set[TH]], start: TH, end: TH, path: list[TH] | None = None + graph: dict[TH, set[TH]], start: TH, end: TH, path: Optional[list[TH]] = None ): """Find shortest path between two nodes within a graph. @@ -389,8 +390,8 @@ def find_shortest_path( def find_connected_nodes( - graph: dict[TH, set[TH]], start: TH, visited: set[TH] | None = None -) -> set[TH] | None: + graph: dict[TH, set[TH]], start: TH, visited: Optional[set[TH]] = None +) -> Optional[set[TH]]: """Find all nodes connected to a start node within a graph. Parameters @@ -449,12 +450,12 @@ class UnitsContainer(Mapping[str, Scalar]): __slots__ = ("_d", "_hash", "_one", "_non_int_type") _d: udict - _hash: int | None + _hash: Optional[int] _one: Scalar _non_int_type: type def __init__( - self, *args: Any, non_int_type: type | None = None, **kwargs: Any + self, *args: Any, non_int_type: Optional[type] = None, **kwargs: Any ) -> None: if args and isinstance(args[0], UnitsContainer): default_non_int_type = args[0]._non_int_type @@ -1013,7 +1014,7 @@ class PrettyIPython: def to_units_container( - unit_like: QuantityOrUnitLike, registry: UnitRegistry | None = None + unit_like: QuantityOrUnitLike, registry: Optional[UnitRegistry] = None ) -> UnitsContainer: """Convert a unit compatible type to a UnitsContainer. @@ -1048,7 +1049,7 @@ def to_units_container( def infer_base_unit( - unit_like: QuantityOrUnitLike, registry: UnitRegistry | None = None + unit_like: QuantityOrUnitLike, registry: Optional[UnitRegistry] = None ) -> UnitsContainer: """ Given a Quantity or UnitLike, give the UnitsContainer for it's plain units. |